The good folks from B&T say it right from the top: “A loader like this WILL NOT work with a single-position-feed magazine like a Glock (or pretty much any pistol) magazine. It will ONLY work with a double-position-feed magazine like most SMGs and rifles use.”

And just in case you feel the need to use your men’s hockey glove:

All kidding aside, this looks to be both practical and useful. I found one retail outlet called HKparts selling it for $24.95.

It’s obviously meant to make our gun range shooting experience quicker and less complicated, and that’s the point.